dulcet - sweet
A ‘dulcet’ sound is melodious, soothing, and pleasing to the ear. The word was originally used to refer to something that tastes sweet or is generally pleasurable or agreeable, but is now almost exclusively encountered in the context of a sound. Can sometimes be used humorously.
Mike achieved great success as a radio DJ thanks to his dulcet voice. People found him very soothing to listen to.
Anne would always play her harp in her room after dinner, but the dulcet sounds would carry throughout the house.
Everybody started complaining when I began to sing. I guess they don’t appreciate my dulcet tones!